| Subject | English | Finnish |
| commun., IT | data layer | datakerros |
| commun., comp. | data link layer | siirtokerros |
| commun., comp. | data link layer | siirtoyhteyskerros |
| commun., comp. | data link layer | kerros |
| comp., MS | data-link layer | siirtoyhteyskerros (Layer two of the OSI model. A layer that packages raw bits from the physical layer into frames (logical, structured packets for data). This layer is responsible for transferring frames from one computer to another, without errors. After sending a frame, the data-link layer waits for an acknowledgment from the receiving computer) |
| transp., avia. | physical layer protocol data unit | fyysisen kerroksen yhteyskäytännön datayksikkö |